extern crate rand;

use std::io;
use std::cmp::Ordering;

use rand::Rng;

fn main () {
    println! ("Guess the number!");
    let secret_number = rand::thread_rng () .gen_range(1, 101);
    // println! ("The secret number is: {}", secret_number);
    loop {
        println! ("Please input your guess.");
        let mut guess = String::new ();
        io::stdin ()
            .read_line (&mut guess)
            .expect ("Failed to read line");
        let guess: u32 = match guess.trim().parse() {
            Ok(num) => num,
            Err(_) => continue,
        };
        println! ("You guessed: {}", guess);
        match guess.cmp(&secret_number) {
            Ordering::Less => {
                println!("Too small!");
            }
            Ordering::Greater => {
                println!("Too big!");
            }
            Ordering::Equal => {
                println!("You win!");
                break;
            }
        }
    }
}
